I have a canon 1000D DSLR and a Sigma EF-610 flash. The Flash seems to work find in full Auto mode when attached to the camera body, but when I try to use it off camera I run into problems.
When the ...

I want to use an on-camera TTL flash and off-camera manual flashes simultaneously. That is, when I press the shutter button, I want my main on-camera flash to fire using TTL and my off-camera manual ...

What's the technical challenge here? Is it more of a marketing decision to encourage you to pay more for TTL based models (let's disregard other advantages of TTL for the moment). If we can have flash ...

Although I have been photographing for 3 years now, there are still areas I am fairly new to.
I really love film photography, but I also like to use flashes for portraits and such.
Of course with my ...

If I understood TTL correctly, say you are in M mode with a camera and you have intentionally underexposed. The flash in TTL mode theoretically would try to add enough light to correctly expose the ...

I've got a Yongnuo 565 EX II that meters flawlessly when attached to the hotshoe of my 60D, but is very inconsistent when used off camera and slaved to the built in flash unit.
It frequently doesn't ...

I've been watching a lot of deconstructing videos on how the light is setup. Often times there are 2-3 flashes at the studio. The photographer will say that they are all set to TTL. But how does that ...

I think I have a Canon E-TTL issue with a specific camera body/lens combination when the flash is fired through a modifier (umbrella or softbox).
When I use my EF-S 17-55 f/2.8 lens on my 60D body, ...

I have an old Promaster FTD 5600 flash. These flashes have an interchangeable module that allows it to work with different manufacturers' TTL systems. Right now the flash has a Nikon module; it does ...

In other words, why is ambient exposure metering independent from TTL metering? Let's say Im taking a picture in a room that has a window and some daylight is getting in,and Im shutting in P (program ...

Does auto mode of flash metering have any advantage over TTL?
One advantage that I can think of is the absence of a pre-flash in the auto metering, which can make some people blink. (But I rarely use ...

There is "External flash control" section in the camera's menu. However it is not accessible if you have no external TTL flash on hand.
How can I find out is there ability to change the output power ...

For example, I use a regular cropped DSLR (like Canon 400D (Rebel XTi)) and I use an external ON-camera flash (mounted on the camera's shoe).
How do I determine by looking over the description within ...

When I used second curtain sync on my Canon DSLR, I noticed that the camera flashes twice: once when the shutter opens and the other time when the shutter is about to close. (I noticed that because I ...

So I'm only beginning to learn TTL but from what I understand the preflash determines how much flash power to use. But the camera already exposes everything correctly for the entire scene (assuming ...

I am planning on buying a second hand ETTL flash for my Canon 550D.
What are things I should pay close attention to when buying a second hand flash?
For example: is there a parameter, comparable to ...

I just bought a radio trigger for my flash. I was just wondering if I understood TTL correctly, as I move the flash around and changes the distance does TTL automatically try to compensate (assuming ...

When trying to get started with flash photography, there are a lot of new options, features and techniques that a photographer gets thrown in to. When starting on a budget, what features will give a ...

I understand that TTL flash means the flash will preflash and try to calculate the right exposure for that particular scene. That part makes sense, but what exactly is the "right exposure"? Does it ...

I've got that Canon model, and I'm using it with a Promaster 7500DX flash. The flash appears to support TTL light metering, but I can't find any way to make the camera recognize this. Consequently, ...

I'm trying to compare two camera bodies (Nikon D90, Nikon F100 (digital and film)) with respect to TTL flash power in different situation. I came to know that few Canon flashes can display the flash ...

I'm trying to figure out something for a project that's upcoming. I'd like two flashes on stage (maybe three) triggered by an ST-E2 on-camera from the back of the room and various places in-between. ...

Yesterday a user on stackexchange asked me why do I prefer manual over TTL when working with speedlites. I use them mostly off-camera and I've developed a kind of a workflow where I do not walk back ...

I am trying to teach myself flash photography, and I am currently confused about metering modes. In what shooting conditions would each the following metering modes be best-suited? (And why do they ...

I have a 500D with the 430EX II flashgun. I've taken two pictures with the camera in manual mode, one with the flash in ETTL mode and then in manual mode with the power to 1/64 and the flash exposure ...

I got the Metz 44 AF-1 flash recently that is TTL capable for my Canon 550D, and have been reading around to get a better understanding of using flash on-camera (Neil Van Niekerk's article on flash ...

I am using a Canon 350D/XT and found some information on web that the Pixel Knight TR-332 radio flash may be incompatible with that particular Canon camera due to DIGIC II and lack of Flash functions ...

I see that the cables that support TTL offered by manufacturers such as Canon and Nikon for using a flash off-camera are fairly spendy and that there are some third-party cables at a fraction of the ...

When I am using a Canon flash in the E-TTL mode, how can I tell which flash power the E-TTL magic chose?
For example, if I got a correct exposure in the E-TTL mode, can I easily choose the same flash ...

Essentially, if you own an E-TTL II (or presumably iTTL) cable of a certain length/type, is there any reason to also own a manual PC-sync cable of a similar length/type, or can the camera be fired in ...

I've been planning to get the Canon 430EX, but I'd love to save a little cash, so I started looking at other 3rd party flashes. I've found a few that claim to have ETTL II support, but being so much ...